package com.itheima.service;

import com.itheima.domain.Catalog;
import com.itheima.domain.Course;

import java.util.List;

public interface CourseService {
    List<Course> findAll(String page, String pageSize);

    void save(Course course);

    Course findById(String id);

    void update(Course course);

    void delete(String id);
}


